Permutation-pad lock



(No Model.)

J. H. WHITTINGTON. PERMUTATION PADLOGK.

No. 550,668. Patented Dec. 3, 1895.

AN DREW RGRAHAM. FHUTO'UI'HU.WASMI NGTOILDII JOSEPH H. XVHITTINGTON, OF BUFFALO, NEW YORK.

PERM UTATION-PADLOCK.

SPECIFICATION forming part of Letters Patent No. 550,668, dated December 3, 1895.

Application filed March 23, 1895. Serial No, 542,893. (No model.)

T0 aZZ whom it may concern.-

Be it known that I, J OSEPH H. WHIrTINo TON, a citizen of the United States, residing in Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Combination-Locks, of which the following is a specification.

This invention relates to an improved combination-lock for use on bicycles, desks, drawers, and safes, or for any purpose for which a con1binatio11-lock is adapted, and will be fully and clearly hereinafter described and claimed, reference being had to the accompanying drawings, in which- Figure 1 is a front elevation of one half of the case of the lock, the other half of the case carrying the combination-index and operat ing shell and knob being removed, so as to expose the interior locking mechanism, showing one position of the parts when locked. Fig. 2 is a similar view, the tumblers, washers, and throw-off plate being removed, show 'ing the locking plate and bolt in a locked position. Fig. 3 represents a view similar to Fig. 2, showing the same parts in an unlocked position. Fig. 4: is a front elevation of the throw-off plate in position 011 the lockingplate, showing the bolt and throw-off plate in its unlocked position. Fig. 5 represents a similar view of the throw-off plate in position on the locking-plate, showing the position of these parts when locked. Fig. 6 is a front elevation of the lock complete. Fig. '7 is a detached front elevation of one of the tumblers operating between the throw-off plate and the top tumbler. Fig. 8 represents a detached frontelevation of the top or outside tumbler. Fig. 9 represents a transverse section through a complete lock on or about line a a, Figs. 3 and 6, looking in the direction of the arrow V, showing the position of the several parts when the lock is put together. Fig. 10 represents a detached front view of one of the washers that intervene between the tumblers. Fig; 11 is a side elevation showing a central section through the locking-plate and its tumbler and washer-holder. Fig. 12 is an inside front elevation of the front half of the case, showing the inside portion of the knob and the operating-shell. Fig. 13 represents a back view of the hasp when the lock is adapted for use as a padlock. Fig. 14 represents a modification, in which the hasp is omitted and the lock thereby adapted to be used for a drawer or for other analogous purposes.

Referring to the drawings in detail, 1 and 1 represent the outside case. As will be seen, it is made in two halves, which are preferably constructed of sheet metal stamped up into the desired form in a die of any wellknown construction. The top of the case is provided with two openings 2 and 2, which are made by cutting corresponding openings in the rims of each half of the case, so that when put together they form the openings 2 and 2.

The hasp 3 is pivotedby a pin 3? in the openin g 2, and when locked the opposite end passes into the opening 2. When the two valves of the case are put together, they are rigidly secured by screws or rivets e. f The hasp 3 is only used when the device is adapted for use as a padlock for bicycles or other analogous purposes. The lock can be adapted for other uses, such as doors, safes,or desks, by simply changing the shape of the opening in the rim of the locking-plate, as will be more clearly hereinafter shown.

To the half 1 of the case is secured by rivets, or in any well-known way, a lockingplate case 5. (Shown in Fig. 9.) It is provided with an upwardly-extending rim 5, having limiting openings 6 for limiting the movement of the locking-plate either way; also, with an opening 6, through which one end of, the bolt passes. Into this locking-plate case is fitted the locking-plate 7, so that it can turn easily therein. It is provided with an inward-extending peripheral rim 7 and a radially-extending pin 8, which is located in the opening 6, (see Figs. 1, 2, and 3,) and thereby limits the distance the locking-plate can be turned either way. The locking-plate '7 is also provided with a tubular barrel 9, open at one side 10, and in the plate is an opening 11, extending radially from the opening 1.0 in the barrel, and directly opposite the opening 11 is an opening 6*, located in the rim 7. The

openings 11 and 6 are openings to allow the bolt to pass, as will be more clearly hereinafter shown. There is also an opening 13 in the plate 7 to allow the end 14 of the hasp 3 to pass when the parts are in their unlocked position, substantially as shown in Fig. 3, and in front of the opening 13 is another opening 15,which prevents the hasp from being opened when the parts are in their locked position, substantially as shown in Fig. 2. The throwoff plate 16 is provided with a central opening 17, which allows it to be easily put over the barrel 9 of the locking-plate and turn easily thereon. On one side of the central opening 17 is an inclined cam-opening 18. The object of the cam-opening 18 is to provide an effectual means for throwing the locking-bolt 19 into the position shown in Figs. 1, 2, and 5, when the combination is broken, which is done by turning it in the direction of the arrow \V, Fig. 5, the inclined camway thereby moving the bolt into the position shown in said Fig. 5 against the force of the spring 20. \Vhen it is turned in the opposite direction until the part 19 of the bolt 19 is opposite the inclined opening, the spring 20 will immediately force it back again or to the position shown in Fig. 4. The throw-off plate is provided with three peripheral projections 21, 22, and 23, the office of which will appear farther on.

After the throw-off plate is put on to the barrel 9 a washer 24 is put on, (see Fig. 9,) then a tumbler 25, then a washer 24, and the last tumbler 26, then awasher 24. The number of tumbler, and washers above described may be made more or less than the number above mentioned, if desired.

In Fig. 12 I have shown an inside view of the opposite side 1 of the case. On the inside of this portion of the lock-case is an operating-shell 34, (see Figs. 9 and 12,) which is rigidly secured to the index-knob 35, so as to move with it. The index-knob 35 is provided with a reduced portion 36, (see Fig. 9,) which passes easily through a circular opening in that side of the case until stopped by the surrounding shoulder or flange 37. The operating-shell 34 is then rigidly attached to the inner end of the knob, substantially as shown in said Fig. 9. In the peripheral edge of this operating-shell are three openings 38, 39, and 40, (see Fig. 12,) where these openings are shown. Then the two halves of the shell or case are put together and secured by the rivets 4, the projections 21, 22, and 23 on the throw-off plate pass into the opening 38, 39, and 40, so that when the knob 35 is turned in either direction the throw-off plate will turn with it. The outside of the base or flange 37 of the knob 35 is provided with a series of figures forming the dial arranged in a circlein this instance, from 5 to 50, (see Fig. 6,)where this is shown.

The operation of the lock is as follows: For illustration, we will call the combination 5, 15, and 43. Turn the dial-knob 35 in the direction of the arrow X (see Fig. 6) four times or. more around and until the numeral 5 is opposite the indexmark 27. This operation brings the last tumbler 26 in position, so that its opening 29 will be opposite the part 19 ofthe bolt 19, therebyaleaving the opening freefor that portion of the bolt to pass into it. This is done by the pin 30 (shown in Figs. 1, 4, 5, and 9) coming in contact with the shoulder 31 on the tumbler 25, which causes its pin 32, when it comes in contact with the shoulder 33 on the tumbler 26, to move it. Then turn the index-knob 35 around twice in the opposite direction until the dialnumber 15 is opposite the index-mark 27, which operation causes the pin 30 to come in contact with the opposite side of the shoulder 31 on the tumbler 25, and move it so that its'opening41 will be'in position for the portion 19 of the bolt 19 to pass into it. Then turn the knob 35 in the opposite direction until 43 is indicated at the index-mark 27. This operation brings the throw-off plate into the position shown in Fig. 4, and the bolt is free to be moved by the spring 20 into the openings, which operation causes the back end 19 of the bolt 19 to pass out of the opening 0 in the stationary locking-plate case, thereby releasing the bolt from said case and looking all the tumblers and the locking-plate, so that all move together. Now by turning the knob in the opposite direction the hasp is thrown into the position shown in Fig. 3, thereby opening the lock.

I will mention here that the washers 24 are kept from turning on the barrel 9 by the inner projecting shoulders 42 and 42, (see Figs. 1 and 10,) which fit in the opening 10 in said barrel 9, substantially as shown in Fig. 1. It is also provided with an opening 43 to allow the part 19 of bolt 19 to enter.

To brake or throw out the combination and lock the device turn the knob 35 in the direction indicated by the arrow X, Fig. 6, thereby rotating the locking-plate 7 until pin 8 strikes the shoulders 44, which operation brings the end 19 of the bolt 19 opposite the opening 6. The inclined face of the cam-opening 18 of the throw-01f plate 16 being in contact with the part 19 of bolt 19 pushes the bolt so that its end 19 passes through the opening 6 in the stationary locking-plate case, thereby freeing all the tumblers, so that a continued turning will throw them all out, thereby preventing the look from being opened unless the true combination is known.

I claim as my invention 1. In a combination lock, the combination with the holding case, an operating knob mounted so as to turn on the holding case and carrying an index dial, a throw off plate having an upward projecting portion, a looking plate provided with abarrel upon which the throw off plate is mounted, means connecting the throw off plate with the operating knob, a series of movable tumblers mounted on said barrel and provided with shoulders, and upward projecting stops located be yond the periphery of the tumblers, the tumblers alternating with stationary washers, a locking plate, a locking spring bolt mounted on said plate, a fixed holding mechanism and means for connecting or disengaging the bolt therefrom, substantially as described.

2. In a combination lock, the combination with a fixed locking plate case, an opening in the side of said fixed case through which one end of the locking bolt passes, of a locking plate having a barrel carrying an alternate series of Washers and tumblers having an opening on their inner sides and upward portions beyond their peripheries, a locking bolt, a throw off plate for forcing one end of the bolt into said opening in the locking plate case and the other portion of the bolt from the opening in the tumblers and washers, substantially as and for the purposes described.

3. In a combination lock, the combination with a fixed mechanism secured to the lock case, of a movable mechanism adapted to turn therein consisting of a locking plate provided with a barrel having an opening eX- tending through it and into the plate, a movable throw off plate and a series of fixed washers mounted on said barrel with an alternating series of tumblers, all having side openings, each tumbler being provided with a stop adapted to operate against the shoulder of another tumbler and move it, and means substantially as above described connected with the throw off plate for operating it.

4:. In a combination lock, the combination of a fixed mechanism for locking the bolt 19, a movable locking plate having a barrel carrying an alternating series of washers fixed immovably on said barrel and tumblers movable thereon, and having an opening at one side and provided with shoulders and stops, a locking bolt provided with a spring for holding its head up to and in the side opening in the locking plate, a throw off plate fitted to turn easily on said barrel and provided with an inclined cam opening and means for operating it, whereby the bolt may be forced out of the side openings in the locking plate, washers and tumblers; and thereby release all from the fixedlocking mechanism, substantially as described.

5. In a combination lock, the combination of a fixed locking mechanism, with a movable locking plate, means for limiting its movement on the fixed locking mechanism a looking bolt kept to its normal position by a spring, a throw off plate, an alternate series of washers and tumblers having stops and mounted on the locking plate barrel, and means for operating the same, substantially as described.

JOSEPH II. WHITTINGTON.

\Vitnesses A. J. SANGSTER, L. M. SPoNG. 

